SOC 2 Compliance for SaaS Applications

SOC 2 compliance is a security framework designed to help SaaS providers safeguard customer data and meet enterprise expectations. It’s built around five key Trust Services Criteria: Security, Availability, Processing Integrity, Confidentiality, and Privacy. For SaaS companies, especially in the UK, achieving SOC 2 compliance is critical to building trust, meeting global standards, and aligning with regulations like GDPR.

Key Points:

• What is SOC 2? A security framework by AICPA focusing on data protection through five criteria.
• Why it matters: Enterprise clients demand SOC 2, with 78% requiring Type II certification.
• Types of reports:
  • Type I: Evaluates controls at a single point in time.
  • Type II: Assesses control effectiveness over 3–12 months.
• UK relevance: SOC 2 compliance supports GDPR alignment and global competitiveness.
• Challenges: Multi-tenant architectures, cloud dependencies, and maintaining continuous compliance.
• Costs: UK audits range from £16,000 to £60,000, with ongoing maintenance adding 15–20% annually.

SOC 2 compliance isn’t just about passing audits. It strengthens security, reduces the risk of breaches, and simplifies client onboarding. For SaaS providers, it’s a key step toward meeting customer expectations and thriving in competitive markets.

SOC 2 Trust Services Criteria Explained

The 5 Trust Services Criteria

SOC 2 revolves around five Trust Services Criteria, with Security being the only mandatory component. The other four – Availability, Processing Integrity, Confidentiality, and Privacy – are optional and should align with your SaaS platform’s capabilities and customer expectations.

• Security focuses on safeguarding system resources from unauthorised access, theft, or disclosure. This is achieved through measures like firewalls, multi-factor authentication (MFA), and intrusion detection systems. For SaaS platforms, tools such as web application firewalls (WAFs) and mandatory MFA for admin accounts are common.
• Availability ensures systems remain functional and accessible as promised in service level agreements (SLAs). Key practices include network monitoring, disaster recovery protocols, and failover systems.
• Processing Integrity guarantees that system operations are accurate, timely, and authorised. For SaaS applications, this involves robust quality assurance processes and monitoring inputs and outputs to ensure reliable data delivery.
• Confidentiality protects sensitive information, such as intellectual property or proprietary algorithms, ensuring access is limited to authorised individuals or entities. This is often managed through encryption and strict access controls, especially in multi-tenant environments.
• Privacy governs how Personally Identifiable Information (PII) is collected, used, stored, and disposed of, in line with your privacy notice and Generally Accepted Privacy Principles (GAPP). SaaS platforms must implement tools like consent management systems, map PII data flows, and establish secure disposal practices.

These criteria collectively form the backbone of SaaS security practices and are crucial for audit processes.

“For security-conscious businesses, SOC 2 compliance is a minimal requirement when considering a SaaS provider.” – Imperva

Understanding these criteria is essential for grasping the differences between SOC 2 report types.

Type 1 vs Type 2 SOC 2 Reports

SOC 2 reports come in two types, each serving a different purpose:

• Type 1 reports focus on whether controls are properly designed at a specific point in time. These reports provide a snapshot of your security setup on a given date but offer limited assurance to stakeholders.
• Type 2 reports assess how well these controls function over a longer period, typically 3 to 12 months. This type of report demonstrates the consistent operation of security measures, making it the preferred choice for enterprise customers who require greater confidence in ongoing security practices.

For SaaS providers in the UK, starting with a Type 1 report can help identify and address gaps, but securing enterprise contracts often necessitates a Type 2 report.

SOC 2 and UK Data Protection Requirements

SOC 2 aligns closely with UK data protection regulations, particularly the UK GDPR’s security principle, which mandates appropriate technical and organisational measures to protect personal data. Both frameworks emphasise the core principles of confidentiality, integrity, and availability (the CIA triad).

The Privacy criterion in SOC 2 shares significant overlap with UK GDPR requirements, including transparency, consent, data minimisation, and breach notification.

“Being in compliance with the SOC 2 Privacy criteria may get an organisation much of the way toward compliance with GDPR” – Becky McCarty, Linford & Co., LLP

However, it’s important to note that while SOC 2 compliance is voluntary, UK data protection laws are mandatory and come with severe penalties for non-compliance – up to £17.5 million or 4% of global turnover. UK law also includes requirements not explicitly covered by SOC 2, such as the “right to be forgotten” and appointing a Data Protection Officer (DPO) for large-scale data processing.

The Information Commissioner’s Office (ICO) recommends the UK government’s Cyber Essentials scheme as a baseline for technical controls. Implementing SOC 2 measures like encryption, pseudonymisation, and regular vulnerability testing can help organisations meet both SOC 2 and UK GDPR standards.

“The UK GDPR specifically requires you to have a process for regularly testing, assessing and evaluating the effectiveness of any measures you put in place” – ICO

This focus on continuous monitoring aligns seamlessly with SOC 2’s approach.

SOC 2 Challenges for SaaS Platforms

Common SOC 2 Challenges in SaaS Environments

For SaaS providers, navigating SOC 2 compliance often involves tackling technical obstacles tied to the very features that make cloud software scalable. Shared multi-tenant architectures, for example, increase the risk of isolation failures, where one customer’s data might inadvertently affect another’s operations.

The reliance on cloud giants like AWS, Google Cloud, or Azure adds another layer of complexity. While these providers manage physical security, the responsibility for configuring logical access controls, encryption, and monitoring rests squarely on SaaS vendors. This division of duties can lead to gaps if not carefully managed.

Between 2019 and 2021, cloud-based cyberattacks doubled, despite relatively modest growth in SaaS spending. For mid-sized companies, which typically rely on around 120 different SaaS tools, vendor management is a growing challenge. Ensuring visibility into these third-party dependencies – by conducting due diligence and reviewing their SOC 2 reports – can be an operational headache [21, 24]. Moving from a Type I to a Type II audit amplifies this burden, requiring vendors to maintain uninterrupted logs, incident reports, and configuration records for 3–12 months [20, 24].

“One of the greatest hidden costs of compliance is the extra time engineers often have to spend either building workarounds or combing through logs to meet regulatory requirements.” – Christina Harker, PhD, Divio

Fast-moving DevOps workflows can also clash with SOC 2’s stringent change management rules. Every infrastructure change or code deployment must be authorised, tested, and documented before it goes live. On top of that, enforcing the principle of least privilege during onboarding and offboarding remains a frequent stumbling block for audits [20, 24].

These challenges highlight the need for a carefully defined compliance scope, which we’ll delve into next.

Defining SOC 2 Scope for SaaS Applications

Given these hurdles, defining a clear audit scope becomes crucial for achieving SOC 2 compliance. This process involves mapping out system boundaries and aligning them with customer commitments. While Security is a mandatory component of all SOC 2 reports, SaaS providers must decide which additional Trust Services Criteria – such as Availability, Processing Integrity, Confidentiality, or Privacy – apply to their services [20, 23]. For instance, if your Service Level Agreement (SLA) guarantees 99.9% uptime, you’ll need to include the Availability criterion in your scope.

Scoping requires identifying all systems, applications, and data flows involved in delivering your service. This includes cloud infrastructure, code repositories like GitHub, and internal tools [20, 24]. Multi-tenant architectures demand complex logical isolation to prevent data leakage, while single-tenant setups can simplify the process through physical or logical separation. Additionally, any subservice organisations, such as AWS or payment processors, must be included since they directly impact your security commitments [20, 24].

A readiness assessment before the formal audit is essential to catch any systems or controls that might have been overlooked [20, 12]. For first-time audits, narrowing the scope to the Common Criteria (Security) can speed up the process, with additional criteria added in later audits.

What Enterprise Customers Expect from SOC 2-Compliant SaaS Providers

Addressing the technical challenges and defining a precise scope are just part of the equation. Enterprise customers, especially larger organisations, now consider SOC 2 compliance non-negotiable. In fact, 78% of enterprise clients require SOC 2 Type II certification, with most Fortune 500 companies refusing to work with vendors who lack it [26, 28, 29]. Beyond ticking a box, SOC 2 compliance can streamline client onboarding by eliminating the need for lengthy security questionnaires [24, 29].

“Possession of a SOC 2 report is considered table stakes in the SaaS industry, as the answers to most security questions a customer may have about their business’s security posture can usually be pulled from this report.” – Adam Nunn, Sr. Director of Governance, Risk, and Compliance, Auth0

Enterprise clients often prefer Type II reports because they demonstrate operational effectiveness over a 6–12 month period [26, 24]. Companies with SOC 2 Type II certification report 57% fewer data breaches and see a 30% reduction in client onboarding time. Given that the average cost of a data breach has reached £7.7 million in 2024, this level of assurance significantly influences risk assessments.

However, achieving this certification requires a hefty investment. SOC 2 Type II compliance often involves substantial upfront costs for security tools, consulting, and audits. Ongoing maintenance adds another 15–20% of the initial implementation cost annually. With 52% of organisations reporting at least one breach within a year, the investment in SOC 2 compliance is not just about meeting market demands – it’s also a critical step in risk management.

How to Achieve SOC 2 Compliance for SaaS

SOC 2 Implementation Roadmap

Achieving SOC 2 compliance involves navigating four key phases. The first phase, Internal Readiness, typically takes 2–6 weeks. This step is all about defining your system boundaries and identifying the relevant Trust Services Criteria. For example, if your service level agreement (SLA) guarantees 99.9% uptime, you’ll need to include the Availability criterion. Similarly, handling personal data would require addressing Privacy.

Next comes Control Implementation, which usually spans 1–3 months. During this phase, you’ll assign control responsibilities to your engineering and security teams. This step involves implementing measures like access management, encryption, and change management procedures. The goal isn’t just to check boxes but to embed these controls into everyday workflows. For instance, you might require Jira approvals before granting production access.

The third phase, Evidence Accumulation, can take anywhere from 3 to 12 months, especially for Type 2 audits. This involves collecting audit-grade evidence that’s timestamped, verifiable, and tied to specific controls. Teams should be trained to document logs, screenshots, and configuration states as they occur. A real-world example: one SaaS company successfully achieved SOC 2 Type 2 compliance in seven months without any findings.

The final phase, Audit Execution, lasts 4–6 weeks. During this time, a licensed CPA firm (or an ICAEW member in the UK) will review your controls and evidence. After the audit, it takes an additional 2–4 weeks to finalise the report. Conducting a readiness assessment before the formal audit can help identify and address any gaps in policies or technical controls.

“SOC 2 compliance is not the cost of doing business. It’s the framework that enables you to do better business.” – Sam Peters, Author, ISMS.online

Technical Controls for SaaS Platforms

With the roadmap in place, the focus shifts to implementing the technical controls that underpin your compliance efforts. These controls span several critical areas:

• Access Management: Use multi-factor authentication, single sign-on (SSO), least-privilege roles, and conduct quarterly access reviews. Evidence might include logs from tools like Okta or AWS and approval tickets.
• Network Security: Employ web application firewalls (WAF) and intrusion detection systems. Keep WAF configuration logs and alert reports as proof.
• Data Protection: Encrypt data both at rest and in transit, apply data masking, and provide evidence such as screenshots and SSL certificates.
• System Monitoring: Continuously log user activity and set up automated alerts for unusual behaviour. GitHub pull request approvals and incident post-mortems can demonstrate strong change management and incident response.
• Availability and Recovery: Set up automated backups, disaster recovery procedures, and test these processes regularly. Backup restoration logs and disaster recovery test reports are essential evidence.
• Vulnerability Management: Perform regular vulnerability scans and independent penetration testing to identify and address security issues.

Additionally, establish baseline configurations for all cloud services, endpoints, and network devices, and ensure they are consistently enforced. If your organisation is already certified to ISO 27001, you can streamline SOC 2 compliance by leveraging overlapping controls.

UK-Specific SOC 2 Considerations

To align with UK regulations, some adjustments are necessary. SOC 2 audits in the UK are conducted under the ISAE 3000 standard by ICAEW-qualified professionals (Institute of Chartered Accountants in England and Wales). This ensures the same level of assurance as audits performed in the US. Controls should also align with UK GDPR requirements, particularly the ICO’s Data Protection Audit Framework for cyber security.

Audit costs in the UK range from £16,000 to £48,000 for Type 1 audits and £24,000 to £60,000 for Type 2 audits. Additional expenses may include gap analyses, policy development, and security tools.

UK SaaS providers must ensure that SOC 2 Privacy criteria align with the UK GDPR and the Data Protection Act 2018, especially regarding how personal information is collected and disposed of. Data residency requirements may also dictate infrastructure decisions, particularly if enterprise clients require data to remain within UK borders. Since audits are conducted annually, you’ll need to issue bridge letters to confirm no material changes in your control environment between audit periods.

At Tucanoo Solutions Ltd, we apply these principles to create secure, SOC 2-compliant SaaS solutions that meet both global standards and UK-specific regulatory requirements.

Maintaining SOC 2 Compliance

Continuous Compliance Activities

Getting SOC 2 certified is just the first step; the real challenge lies in maintaining compliance throughout the year. For SaaS providers, automated evidence collection has become a game-changer. Modern platforms can now handle up to 80% of the required audit evidence automatically and on an ongoing basis. This includes gathering data from areas like change management, access reviews, incident tracking, and backup validations.

Real-time alerts play a crucial role in identifying control failures or compliance drift (a gradual shift away from established controls) as soon as they occur. Tracey Neal, GRC Manager at Anvilogic, highlighted the importance of automation in this process:

“To gather evidence for SOC 2 Type 2, it becomes very difficult to do manually – it can take up to a year. With Akitra, the system is comprehensive”.

By automating compliance processes, organisations can cut the time spent on security monitoring and evidence collection by up to 80%.

To stay on top of compliance, consider implementing weekly departmental checklists to monitor key activities, such as reviewing data access logs. Conduct quarterly reviews of control effectiveness and host workshops with external experts to stay informed about emerging threats. Assigning a dedicated compliance officer to oversee SOC 2 requirements and adapt to any changes is also essential. Additionally, managing third-party vendor risks should be a priority, as these risks contribute to 70% of compliance failures.

The benefits of maintaining SOC 2 compliance are clear. Organisations with SOC 2 Type II certification report 57% fewer data breaches, making the effort worthwhile. Beyond compliance, these measures also strengthen the overall security of your platform.

Using SOC 2 to Improve SaaS Security

SOC 2 compliance doesn’t just tick a box – it actively enhances SaaS security. These improvements go hand-in-hand with technical controls, reducing risks and simplifying client onboarding. Mike Machado, Chief Data & Security Officer at Shippo, shared how SOC 2 benefits their business:

“It makes partnerships easier and speeds negotiations. Customers can do their due diligence for vendor risk management much faster. This is why SOC 2 cuts deal friction – and our objective is zero deal friction”.

SOC 2 certification can reduce client onboarding times by 30%, which is particularly important as roughly 78% of enterprise clients now require SOC 2 Type II certification from their service providers.

To further minimise risks, deploy a ‘human firewall’ by using real-time alerts to notify employees of policy breaches. Integrate Data Loss Prevention (DLP) tools to control data transfers, addressing human error – a factor in 85% of breaches. Continuous monitoring of processing integrity ensures that data processing remains accurate, complete, and valid.

The shift from one-time assessments to demonstrating sustained compliance over 6–12 months has transformed how SaaS platforms approach security. Many organisations are now pursuing multi-framework compliance, combining SOC 2 with ISO 27001 and GDPR to cut down on overlapping assessments by 40%.

Aligning SOC 2 with UK Governance Frameworks

SOC 2 controls can be seamlessly integrated with existing UK governance frameworks to enhance security measures further. For UK SaaS providers, mapping SOC 2 Trust Services Criteria to frameworks like ISO 27001 and Cyber Essentials is a practical approach. These frameworks share significant overlap, allowing SOC 2 controls to fit within an ISO 27001-compliant Information Security Management System (ISMS). SOC 2 also supports compliance with the UK GDPR and Data Protection Act 2018 by demonstrating the implementation of ‘appropriate technical and organisational measures’ for data security.

This alignment not only ensures compliance with legal requirements but also strengthens the foundation for global regulatory adherence. Providers should also keep an eye on the Data (Use and Access) Act, which took effect on 19th June 2025. This legislation may require updates to existing data security practices. Starting with Cyber Essentials for basic controls and scaling up to full SOC 2 compliance is a logical progression. As the Information Commissioner’s Office (ICO) states:

“Information security supports good data governance, and is itself a legal data protection requirement”.

To maintain continuous compliance, organisations should review their SOC models quarterly, a practice already followed by 48% of companies. At Tucanoo Solutions Ltd, we embed these governance frameworks directly into our SaaS development process, ensuring that security and compliance are integral from the very beginning rather than added as an afterthought.

Conclusion

SOC 2 compliance has become a must-have for SaaS providers in today’s enterprise landscape. Industry experts point out that SOC 2 reports offer a standardised way to show vendors are taking the right steps to protect sensitive data. With cyber threats on the rise and the average mid-sized company now relying on around 120 different SaaS tools, enterprise customers expect this level of reassurance.

That said, achieving and maintaining SOC 2 compliance isn’t without its challenges. For smaller businesses, audit costs can climb into the tens of thousands of pounds, and the ongoing demands of compliance can stretch resources thin. Moreover, the shift from one-off assessments to proving consistent control effectiveness over a 6–12 month period requires a major rethink in how SaaS companies manage their security processes. But the rewards are undeniable: SOC 2 Type II certification opens doors to industries like government, finance, and healthcare, where security standards are particularly rigorous.

Beyond meeting customer expectations, SOC 2 compliance also strengthens your security foundation. By identifying vulnerabilities early, it helps reduce the risk of expensive breaches – especially critical given that 85% of data breaches involve human error. As ComplianceHub emphasises:

“The true value of SOC 2 compliance lies not just in obtaining the report but in the development and continuous improvement of a robust security program that protects both your organization and your valued customers”.

FAQs

What are the key advantages of SOC 2 compliance for SaaS providers?

For SaaS providers, achieving SOC 2 compliance is a powerful way to showcase robust security practices. It signals to customers that their data is managed with care and responsibility, helping to build trust and confidence. Beyond trust, it can also serve as a key differentiator, assuring clients and partners that your organisation adheres to rigorous security standards.

On top of that, SOC 2 compliance helps SaaS providers identify and address potential security vulnerabilities. This proactive approach not only strengthens your security posture but also aligns with the demands of enterprise-level clients. It simplifies forming partnerships with businesses that prioritise data security and compliance as part of their operations.

How does SOC 2 compliance support UK GDPR requirements?

SOC 2 compliance and the UK GDPR share a common purpose: ensuring the security, confidentiality, and integrity of personal data. Both require organisations to put in place effective technical and organisational measures – like risk assessments, encryption, and monitoring – to protect data from unauthorised access or potential loss.

SOC 2’s Trust Services Criteria closely align with the UK GDPR’s security principles, offering a clear framework to meet data protection standards. A SOC 2 audit also provides independent verification of these controls, which can act as evidence to support GDPR compliance, particularly in areas like accountability and documentation. For SaaS providers, obtaining SOC 2 compliance not only bolsters data security but also signals a strong commitment to meeting GDPR requirements in the UK.

What are the main challenges SaaS companies face in achieving and maintaining SOC 2 compliance?

SaaS companies frequently encounter hurdles when it comes to achieving and maintaining SOC 2 compliance. A common mistake is viewing it as a one-time audit rather than an ongoing commitment, which can result in gaps in essential controls. Another challenge lies in the continuous effort required to collect and organise evidence to prove compliance – a task that can quickly become overwhelming.

As these companies expand, the complexity of scaling governance and risk controls grows significantly. On top of that, aligning tailored internal controls with the Trust Services Criteria demands both time and specialised knowledge. To ensure lasting compliance, adopting a structured and forward-thinking approach is absolutely critical.